Microphone key



FIG. 1 is a perspective view of a microphone key incorporating my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an end elevational view thereof, and

FIG. 7 is an end elevational view of the end opposite that shown in FIG. 6.

The broken lines are shown for illustration purposes only. 

The ornamental design for a microphone key, is substantial as shown and described. 